It will cost taxpayers nearly $4 billion, and in exchange, you’ll get a smoother ride on a bridge that can handle the load. That’s the promised return on investment at the new Tappan Zee Bridge, a project now attracting fresh attention from the White House. Andrew Siff reports.

Published at 7:04 PM EDT on May 13, 2014 | Updated at 1:32 AM EDT on May 14, 2014